Stump-burner.



' U IT STATES PATENT OF J OHANN A. O. BREDEMEY-ER, OF SEATTLE,WASHINGTON.

STUM P-BURNERt SPECIFICATION forming part of Letters Patent N0 634,609,dated October-10 1899.

kpplication filed l lovemberlg, 1898. Serial No. 696,895. (1i 0 model.)

To aZZ whom it may concern.-

Be itknown that I, JOHANN A. O. BREDE- MEYER, of Seattle, in the countyof King and State of \Vashington, have invented a new and ImprovedStump-Burner, of which the following is a full, clear, and exactdescription. r The object of the invention is to provide a new andimproved stump-burner which is simple and durable in construction, -veryeffective when in use, and arranged to enable the user to keep a fireperfectly under control, to insure a perfect and rapid con'sumption ofthe entire stump, and to prevent accidental spreading of the fire toneighboring buildings, live trees, the.

The invention consists of novel features and parts and combinations ofthe same, as will be fully described hereinafter and then pointed outinthe claims. I V

Reference is to be hadto the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the views.

Figure l is a side elevation of'the improvement. Fig. 2 is a sectionalside elevation of the same on the line 2 2 in Fig. 3. Fig; 3 is asectional plan view of the same on the line 3 3 in Fig. l, and Fig. 4 isa rear side elevation of one of the sections of the casing.

The improved stump-burner is provided with a casing A, made in the formof a truncated cone, with a hood B set upon the head of the casing, anda smoke-outlet pipe 0,

leading from the apex of the hood forcarry- The casing A- ing off thesmoke and gases. is preferably made in sections D D D D the base of onesectionbeing fitted upon the apex portion of the section below, so thatthe several sections sustain one another, and sec-' tions may be addedor removed to make the casing of a height corresponding to the height ofthe stump to be burned, as will be readily understood by reference toFig. 2.

Each of the sections is made of sheet metal bent into ring shape, withstaples ,D at one end to engage one of a series of slots D in theopposite end of the ring to fasten the overlapping ends together bymeans of a pin D, inserted in the staple after it has passed into one ofthe openings D (See Figs. 3 and 4.) By having two such staples and anumberot slotsD the operator is enabled to increase or decrease thediameter of the sections, according to the diameter of the stump to beburned within the casing.

On each of the sections D D D D is ar ranged a sliding draft-door foradmitting air directly to the casing or body of the burner, the draftpassing by the-doors in upward directionsand each of, the sections beingprovided on'its sides with downdraft-doors F, commanding openings in thesections, such openings leading to tubular conductors G,.located in thebody of the burner. The conductors G are closed at their tops and openat their bottoms to cause the air after passing the doors F to travel ina downward direction and thence into the casingtoward the base of thestump. By means otthe conductors G, arranged, as described, with respectto the doors F, I am enabled to direct drafts against the very base ofthe stump, and thus cause thatpart of the stump to be consumed, whichcould not be effected werethe draft allowed to pass directly from thedraft-doors.

The sides of the casing below the doors F are provided with handles Iito permit of conveniently carrying the casing-sections from one place toanother and to allow of readily setting one section on the top of theotherto build up the casing so as to'contain the stump, as previouslymentioned.

By the construction of the doors described the fire remains completelyunder thecont-rol vof the operator and attacks the stump simultaneouslyon the sides as well as on the top and bottom, and thereby quicklyandeftectually reduces the stump to ashes. By shutting the updraft-doorsE and using the downdraft-doors exclusively the roots of the stamp. inclose proximity to the surface of the is thus completely avoided.

Having thus fully described my invention,

Ielainn as new and desire to secure by Letters Patent 1. A stump-burner,having a series of separable frusto-conicai sections superimposed theone on the other, to form a tapering body serving to inclose the stump,a hood mounted on the uppermost section of the body and having asmoke-outlet pipe, sliding doors commanding draft-orifices in theseveral sections of the body, and draft-conductors incomr'nunicationwith said orifices and situated Within the body, the draft-conductorspassing downwardly from the openings to cause the draft to passdownwardly into the body JOHANN A. O. BREDEMEYER.

Witnesses:

BREDEMEYER, H. W. MoULToN.

